Have you ever felt like your heart was beating strangely, like it was skipping a beat, or like it was suddenly pounding inside your chest? Some people say it feels like your heart is "flying." Many people have experienced this. Today, we're going to talk about one possible cause of this, a condition called Premature Ventricular Contractions (PVCs) . Don't worry, let's keep it simple.
So, what are these Premature Ventricular Contractions (PVCs)?
Simply put, Premature Ventricular Contractions (PVCs) are an irregularity in your heartbeat. Specifically, they occur when the electrical signal that starts the heart beating does not come from the normal place, but from one of the two lower chambers of the heart (called the ventricles ). Normally, the electrical signal that starts the heart beating starts in the upper right chamber of the heart ( the atrium ).
These PVCs are not always a big problem. However, if they continue for months or years, they can weaken the heart muscle. This is called Cardiomyopathy . In most cases, these PVCs can be treated with medication or small treatments.
Some people also call this condition "pre ventricular contractions." Doctors may also call it by these names:
- Premature ventricular complexes
- Ventricular extrasystoles
- Ventricular premature beats
How do the heart's electrical signals control the heartbeat?
Our heartbeat is controlled by a very amazing electrical system. Normally, a cluster of cells in the right atrium, at the top of your heart, called the sinoatrial node (SA node) , sends out the first electrical signal of a heartbeat. This signal travels throughout the heart and goes to the left and right chambers (ventricles) at the bottom of the heart. That's when the heart gets the command to contract, or beat.
But, in the case of PVCs, this first signal starts in a lower chamber of the heart (ventricle). Then, the way that signal travels through the heart changes, causing an irregular heartbeat. Sometimes, when you have a PVC, you may feel like your heart is "skipping the beat."
Who is most likely to develop PVCs? How common is it?
PVCs can happen to anyone. However, they are more common in older people and people with heart disease. You are also at higher risk of PVCs if you have any of the following conditions:
- Heart failure
- High blood pressure ( Hypertension )
- If you have had heart disease before
- Hypertrophic cardiomyopathy
PVCs are actually much more common than you might think. Surveys have shown that about 75% of the population experiences this condition.
Should we be worried about these PVCs? Is this dangerous?
Most people don't have any symptoms or health problems from PVCs. However, if you have symptoms, be sure to see a doctor . You may need treatment, especially to rule out heart disease like cardiomyopathy .
PVCs are usually not life-threatening. However, if they continue to occur over a long period of time, they can damage your heart muscle.
What are the symptoms of Premature Ventricular Contractions (PVCs)?
Most people don't experience any symptoms of PVC. But if you do experience symptoms, they are usually mild. For example:
- Dizziness
- Feeling faint, close to fainting
- Heart palpitations
- Feeling of tightness in the neck veins
If you have other heart conditions, you may have experienced difficulty breathing ( dyspnea ) due to a PVC. Also, as the frequency of PVCs increases, you may notice more symptoms.
How does it feel when PVCs occur?
Many people describe PVCs as a fluttering, fluttering sensation, or a feeling like a skipped beat . But, you may not feel anything. In fact, many people don't even feel a PVC.
What causes PVCs?
There are many reasons why a PVC can occur. Some of them are:
- Electrolyte imbalances in the body, for example, low levels of potassium or magnesium .
- Myocardial infarction
- Heart failure
- Increased adrenaline levels in the body - This can be due to anxiety or stress .
- Reduced blood supply to the heart, for example, if there is coronary artery disease .
How are Premature Ventricular Contractions (PVCs) diagnosed?
When you see a doctor, he or she will ask you about your symptoms, your health history, and perform a physical exam. They may also listen to your heartbeat with a stethoscope to check for any abnormalities.
The first test usually performed is an electrocardiogram (EKG) . An EKG measures your heart rate and assesses the electrical signals in your heart. An EKG can usually help your doctor see if you have an arrhythmia, an extra beat.
Sometimes, you may be asked to wear a Holter monitor or other device that monitors your heart activity for a few days. This can help detect even rare PVCs by measuring your heart rate and rhythm.
What tests are done to find the underlying causes of PVCs?
If you have PVCs frequently or have had them for a long time, your doctor may recommend some additional tests. These tests are used to look for other heart conditions that may be causing your PVCs. You may have tests like these:
- Blood tests - These check your potassium and thyroid hormone levels.
- Cardiac stress testing - measures your heart rate and blood flow through the arteries of your heart while you exercise.
- Cardiac MRI or CT scan - These look at the structure, function, and blood flow of the heart.
- Coronary angiogram - A test that shows the blood vessels in the heart. This helps identify blood flow abnormalities, blocked or narrowed blood vessels.
- Echocardiogram ( Echocardiogram / Echo ) - This visually assesses the function of the heart, the function of the valves, and the way blood flows through the heart chambers.
- Electrophysiology study - This analyzes the electrical activity of the heart.
How are Premature Ventricular Contractions (PVCs) treated?
People who rarely have PVCs may not need any treatment. Treating the underlying heart condition can reduce the frequency of PVCs. For example, you may need to take medicine to lower your blood pressure or slow your heart rate. These medicines may also reduce the frequency of PVCs.
Sometimes, your doctor may prescribe specific treatments for PVCs. This type of treatment is only needed for PVCs if you have frequent irregular heartbeats and are at risk of damaging your heart muscle. Treatment may include:
- Catheter ablation procedure: This is a minimally invasive, non-surgical procedure that involves identifying and destroying the part of the heart that is causing the irregular heartbeat.
- Medications: For example , antiarrhythmic drugs to reduce irregular heartbeats, or drugs such as beta-blockers or calcium channel blockers to lower blood pressure.
Can Premature Ventricular Contractions (PVCs) be prevented?
There's really no way to completely prevent PVCs. However, doing these things can go some way to keeping your overall heart health in good shape:
- Maintain a healthy weight that is appropriate for your height, gender, and body type.
- Completely stop using tobacco and limit things like alcohol and caffeine.
- Eat a balanced, heart-healthy diet rich in fruits, vegetables, and whole grains.
- Regular exercise - This includes aerobic exercise , strength training, and stretching.
- Maintaining healthy cholesterol and blood pressure levels.
- Using healthy ways to manage anxiety and stress - for example, talk therapy or meditation.
- Sleep at least seven hours a night.
How do I know if I am at risk for developing PVCs?
Several factors can increase your risk of developing PVCs. Some of them include:
- Having been diagnosed with other heart conditions, including congenital heart defects .
- Having a family history of arrhythmia (irregular heartbeat).
- If you have had heart problems before.
What is the outlook for the status of PVCs?
In general, the outlook for people with PVCs is good. Most people are not at risk of developing health complications from this.
However, if you have other health problems, or have had heart attacks in the past, your risk of health complications, which means a shortened lifespan, may also increase.
What questions should I ask my doctor?
If you have PVCs, or think you might have them, it's a good idea to ask your doctor these questions:
- What is the most likely reason for me to have these PVCs?
- Could these symptoms be caused by another health condition?
- Do I need to have tests to see if I have any underlying heart disease?
- What tests do I need to do to detect PVCs?
- Do I need treatment for PVCs?
- What are the signs that PVCs are getting worse?
- Will PVCs go away completely after treatment?
When should you go to the Emergency Room?
PVCs are not usually an emergency. However, if you have these symptoms along with PVCs, call 911 immediately (in Sri Lanka, call 1990 Suwaseriya Ambulance Service) or go to the nearest emergency room:
- Dizziness or fainting ( Syncope ) / loss of consciousness
- Lightheadedness - (feeling light-headed)
- Pain in the chest, neck, jaw, or arms
- Difficulty breathing ( Dyspnea )
- Delirium
Important: Can a PVC cause sudden death?
If you have underlying structural heart disease, or if PVCs start in certain areas of the heart, PVCs can increase your risk of sudden cardiac death. However, for most people, PVCs are a harmless condition and do not lead to sudden death.
Can other health conditions cause symptoms similar to PVCs?
Yes. Symptoms like heart palpitations and chest tightness can also be caused by other health conditions. For example:
- Anemia (decrease in red blood cells)
- Anxiety disorders or panic attacks
- Hyperthyroidism (overactive thyroid gland)
- Hypoglycemia (low blood sugar)
- Electrolyte imbalances
Final Take-Home Message
Premature Ventricular Contractions (PVCs) are an irregular heartbeat. They occur when the electrical signal that causes the heart to beat starts in the lower chambers of the heart instead of in the upper chambers. A PVC often feels like a skipped beat, or a fluttering or fluttering sensation in the chest. However, many people do not experience any symptoms.
PVCs are not dangerous for most people. However, if you have other health conditions, especially heart disease, you are at higher risk of developing complications from PVCs. If you have any concerns or concerns, it is best to seek medical advice. Then you can get the necessary tests and receive the appropriate treatment. Don't forget that living a healthy lifestyle is also very important for heart health.
` Premature Ventricular Contractions, PVCs, Heartbeat, Irregular Heartbeat, Heart Disease, Heartbeat Electrical Signals, Cells, Atria, EKG, Heart Disease Symptoms
💬 අදහස් (0)
තවමත් කිසිදු අදහසක් පළ කර නොමැත. ඔබේ අදහස පළමු වරට මෙහි එක් කරන්න.
ඔබේ අදහස එක් කරන්න